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<h1><a name="SECTION006000000000000000000"></a>
<a name="strings"></a>
<br>
4. String Services
</h1>

<p>
The modules described in this chapter provide a wide range of string
manipulation operations.  Here's an overview:

<p>
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  <tr class='oddrow'>
      <td><b><tt class='module'><a href='module-string.html'>string</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Common string operations.</td></tr>
  <tr><td><b><tt class='module'><a href='module-re.html'>re</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Regular expression search and match operations with a
                Perl-style expression syntax.</td></tr>
  <tr class='oddrow'>
      <td><b><tt class='module'><a href='module-struct.html'>struct</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Interpret strings as packed binary data.</td></tr>
  <tr><td><b><tt class='module'><a href='module-difflib.html'>difflib</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Helpers for computing differences between objects.</td></tr>
  <tr class='oddrow'>
      <td><b><tt class='module'><a href='module-StringIO.html'>StringIO</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Read and write strings as if they were files.</td></tr>
  <tr><td><b><tt class='module'><a href='module-cStringIO.html'>cStringIO</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Faster version of <tt class="module">StringIO</tt>, but not
                subclassable.</td></tr>
  <tr class='oddrow'>
      <td><b><tt class='module'><a href='module-textwrap.html'>textwrap</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Text wrapping and filling</td></tr>
  <tr><td><b><tt class='module'><a href='module-codecs.html'>codecs</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Encode and decode data and streams.</td></tr>
  <tr class='oddrow'>
      <td><b><tt class='module'><a href='module-encodings.idna.html'>encodings.idna</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Internationalized Domain Names implementation</td></tr>
  <tr><td><b><tt class='module'><a href='module-encodings.utf-8-sig.html'>encodings.utf-8-sig</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>UTF-8 codec with BOM signature</td></tr>
  <tr class='oddrow'>
      <td><b><tt class='module'><a href='module-unicodedata.html'>unicodedata</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Access the Unicode Database.</td></tr>
  <tr><td><b><tt class='module'><a href='module-stringprep.html'>stringprep</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>String preparation, as per RFC 3453</td></tr>
  <tr class='oddrow'>
      <td><b><tt class='module'><a href='module-fpformat.html'>fpformat</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>General floating point formatting functions.</td></tr>
</table>

<br>
<p>
Information on the methods of string objects can be found in
section&nbsp;<a href="string-methods.html#string-methods">3.6.1</a>, ``String Methods.''

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<span class="release-info">Release 2.5.1, documentation updated on 18th April, 2007.</span>
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